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See Product Specifications
| Part Number: | L99LD21Q6TR | 
| Category: | Integrated Circuits (ICs) | 
| Subcategory: | PMIC - LED Drivers | 
| Manufacturer: | STMicroelectronics | 
| Packaging: | Tape & Reel (TR) | 
| Product Status: | Active | 
| Type: | DC DC Regulator | 
| Topology: | Buck, Boost | 
| Internal Switch(s): | Yes | 
| Number of Outputs: | 2 | 
| Voltage - Supply (Min): | 5.5V | 
| Voltage - Supply (Max): | 24V | 
| Voltage - Output: | 50V | 
| Current - Output / Channel: | 1.5A | 
| Frequency: | 100kHz ~ 450kHz | 
| Dimming: | PWM | 
| Applications: | Automotive, Lighting | 
| Operating Temperature: | -40°C ~ 150°C (TJ) | 
| Mounting Type: | Surface Mount | 
| Package / Case: | 40-TFQFN Exposed Pad | 
| Supplier Device Package: | 40-QFN (6x6) |